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How has "if it weren't for" got the meaning of
use this when you would do something different if a particular situation did not exist now
(the definition of "if it weren't for" in LDOCE) ?
EDIT 18 NOV
If we take "it" as "the situation" and "for" as "because of" as suggested by athlonusm, "if it weren't for XXX" will mean "if the reason for it isn't XXX even though I know it is in reality". Then for example
If it weren't for music, world would be a dull place.
will mean
If the reason for it isn't music even though I know it is in reality, world would be a dull place.
It sounds illogical, doesn't it?
Since the answers posted so far are explaining mainly what the subjunctive mood is, I have to emphasize that I know the basic meaning and usage of subjunctive "were".
I wanted to show using the above example about music that its current meaning is beyond its literal meaning. I suppose that there is a historic reason for it to have the current meaning. I want to know that.
1This question does not belong to this site, see English language and Usage Stack Exchange. – CipherBot – 2015-11-17T12:51:32.377
Read about "subjunctive 'were' " and irrealis conditions. – Tᴚoɯɐuo – 2015-11-17T12:59:10.460
@TRomano, my question is how "if it weren't for XXX" has got the meaning "if XXX didn't exist". – Aki – 2015-11-17T15:53:13.327
@Aki: http://www.anglisztika.ektf.hu/new/content/tudomany/ejes/ejesdokumentumok/2010/Kovacs_2010.pdf
– Tᴚoɯɐuo – 2015-11-17T17:15:59.727@CipherBot, can I ask you why? – Aki – 2015-11-18T01:13:02.807
The paraphrase is problematic: If the reason for it isn't music even though I know it is in reality, world would be a dull place doesn't make much sense. To paraphrase it with your definition, If it weren't for music, the world would be a dull place --> If we had no music/If music didn't exist/if it wasn't because of music, the world would be a dull place – Damkerng T. – 2015-11-18T02:23:05.047
I commented before the edit that you placed and it was worded as etymology. Etymology questions are better suited to ELU as that is one of the purpose of that site. – CipherBot – 2015-11-18T02:43:19.717
@DamkerngT., I know my paraphrase doesn't make sense. Hence my question "How has it got its meaning?". For example, in your paraphrasing, where does "exist" come from? – Aki – 2015-11-18T04:38:51.680
@Aki It's from your dictionary: "use this when you would do something different if a particular situation did not exist now", "use this when a situation would have been different if something had not happened or someone had not done something in the past", "use this when a situation would be different if something was not happening now or had not happened in the past", and so on. – Damkerng T. – 2015-11-18T04:53:52.933
@DamkerngT., yes. But, "exist" doesn't seem to come from any of the words that make up the sentence. If I interpret the sentence literally I get my paraphrase above. So, I think it has got the current meaning from a historical background or else. I want to know that. – Aki – 2015-11-18T05:24:59.387
Now I see why you added the tag "etymology". FWIW, I agree with athlonusm's answer. For can mean because (of), e.g., If it wasn't because of him, we wouldn't have come this far ~ If it wasn't for him, we wouldn't have come this far. – Damkerng T. – 2015-11-18T05:59:06.317
@DamkerngT., does "if it wasn't because of him" mean literally "if he didn't exist"? It seems to me it doesn't. – Aki – 2015-11-18T06:07:21.060
No. Try to be flexible in comprehension in a second language, and avoid substituting words or phrases with their dictionary definitions. Machines do that, and that's why they're struggling to understand human languages. We're beyond them. – Damkerng T. – 2015-11-18T06:25:24.623
@CipherBot, don't you think "This question does not belong to this site" is a bit strong wording considering we have the "etymology" tag in ELL even when the title is original "etymology of if it weren't for"? – Aki – 2015-11-18T09:49:48.500
I am merely stating the obvious fact of each site having its own slightly different purpose in which this case ELU is (to quote my previous comment) "better suited" for these type of questions. Maybe yes I may have sounded slightly harsh at that as was typing that in a hurry. – CipherBot – 2015-11-18T10:23:25.047
I think your definition might be just a simple and rough way to express the idea of this construction. Him in If it wasn't because of him means something associated with him. What this something associated with him is you should know from the context (look at the second example in my answer: commenting it, I wrote the word help though there was no such a word in the sentence). The existence of a thing can also be something associated with the thing (If it weren't for music), but not always. – athlonusm – 2015-11-18T13:35:35.520
@athlonusm, even if we read "help" from the context, I feel something is still missing. There seems to be a distance between "if the reason for it isn't his help" and "without his help". – Aki – 2015-11-18T15:40:25.730